CVE Catalog

CVE-2026-41310

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.31%

24th percentile - higher than 24% of all known CVEs

Summary

The Zipkin exporter in OpenTelemetry.Exporter.Zipkin versions 1.15.2 and earlier has unbounded key growth in the remote endpoint cache derived from span attributes. In high-cardinality scenarios, this leads to excessive memory usage and degraded availability.

Risk Assessment

This can cause gradual memory growth in .NET applications, leading to instability and potential service outages.

Recommendation

Update the library to version 1.15.3, which introduces a bounded LRU cache for remote endpoints.

Related vulnerabilities

Original NVD description (English source)

OpenTelemetry.Exporter.Zipkin is the .NET Zipkin exporter for OpenTelemetry. In versions 1.15.2 and earlier, the Zipkin exporter remote endpoint cache accepts unbounded key growth derived from span attributes. In high-cardinality scenarios, a process using Zipkin export for client or producer spans could experience avoidable memory growth under sustained unique remote endpoint values, increasing process memory usage over time and degrading availability. This issue is fixed in version 1.15.3, which introduces a bounded, thread-safe LRU cache for remote endpoints with a fixed maximum size.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS